Eagle Ford 351W 4.000in Crank 6.250in H-Beam -6.6cc Flat Top 4.155in Pistons Balanced Assembly

If you're building a high-performance Ford 351W engine for serious racing, a balanced rotating assembly is the foundation for reliable power. This assembly from Eagle is designed to handle the demands of competition, whether you're running naturally aspirated, forced induction, or nitrous oxide. It takes the guesswork out of matching critical internal engine components, ensuring they work together harmoniously from the start.

This assembly features a 4.000-inch forged 4340 steel crankshaft, known for its strength and durability under high stress. The connecting rods are 6.250-inch H-beam style, also forged from 4340 steel, and secured with 7/16-inch ARP 8740 bolts, a popular choice for their reliability in performance applications. The pistons are forged 4032 aluminum from Mahle, featuring a -6.6cc flat top design with a 4.155-inch bore. They come with plasma-moly file-fit rings, allowing for precise gap setting to match your specific engine build. To complete the package, King XP rod and main bearings are included, offering robust performance for demanding conditions.

This assembly comes balanced from the factory, which is a crucial step for reducing engine vibration and improving overall longevity, especially at higher RPMs. It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures to ensure optimal performance and durability.